Hypermastus

Hypermastus is a genus of sea snails, marine gastropod mollusks in the family Eulimidae.

==Species== Species within this genus include the following: Hypermastus acutus (G. B. Sowerby I, 1834) Hypermastus araeosomae (Habe, 1992) Hypermastus auritae (Warén, 1991) Hypermastus boschorum (Warén, 1991) Hypermastus bulbulus (Murdoch & Suter, 1906) Hypermastus casta (A. Adams, 1861) Hypermastus colmani (Warén, 1991) Hypermastus coxi (Pilsbry, 1899) Hypermastus cylindricus (Sowerby III, 1900) Hypermastus echinocardiophilus (Habe, 1976) Hypermastus echinodisci (Warén, 1980) Hypermastus epeterion (Melvill, 1889) Hypermastus epiphanes (Melvill, 1897) Hypermastus georgiregis (Cotton & Godfrey, 1932) Hypermastus indistinctus (Thiele, 1925) Hypermastus kilburni (Warén, 1991) Hypermastus lacteus (A. Adams, 1864) Hypermastus mareticola (Warén & Norris, 1994) Hypermastus minor (Warén, 1991) Hypermastus mucronatus (Sowerby II, 1866) Hypermastus obliquistomum (Warén, 1991) Hypermastus orstomi (Warén, 1994) Hypermastus peronellicola (Kuroda & Habe, 1950) Hypermastus philippianus (Dunker, 1860) Hypermastus placentae (Warén & Crossland, 1991) Hypermastus productus (Sowerby III, 1894) Hypermastus pusillus (Sowerby I, 1834) Hypermastus randolphi (Vanatta, 1900) Hypermastus roemerianus Matsuda, Uyeno & Nagasawa, 2013 Hypermastus rosa (Willett, 1944) Hypermastus ryukyeunsis (Matsuda, Uyeno & Nagasawa, 2010) Hypermastus sauliae (Warén, 1980) Hypermastus serratus (Warén, 1991) Hypermastus subula (A. Adams, 1864) Hypermastus tenuissimae (Warén, 1991) Hypermastus tokunagai (Yokoyama, 1922) Hypermastus williamsi (Cotton & Godfrey, 1932) Species brought into synonymy: Hypermastus bountyensis (Powell, 1933): synonym of Pelseneeria bountyensis (Powell, 1933) Hypermastus bulbula (R. Murdoch & Suter, 1906): synonym of Hypermastus bulbulus (Murdoch & Suter, 1906) Hypermastus cookeanus (Bartsch, 1917): synonym of Stilapex cookeanus (Bartsch, 1917) Hypermastus dunkerianus (Pilsbry, 1901): synonym of Hypermastus philippiana (Dunker, 1860) Hypermastus lacteus (A. Adams, 1864): synonym of Melanella tanabensis Takano, Tanaka & Kano, 2019 Hypermastus roemeriana Matsuda, Uyeno & Nagasawa, 2013 a: synonym of Hypermastus roemerianus Matsuda, Uyeno & Nagasawa, 2013